The prices of staple foods will more than double in 20 years unless world leaders take action to reform the global food system, Oxfam has warned.
Oxfam chief executive Barbara Stocking told Today presenter Sarah Montague that the big problem was a lack of investment in small farmers.
At the moment, she said, there was enough food to feed the world, but the rural poor lacked the money to buy it.
With rising prices and population in the future, however, she argued that there simply would not be enough food for everyone to eat.
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